Tube-blower.



E. 1. McCA'RTY.

TUBE BLOWER.

APPLICATION-FILED 0cT.9. 1911.

I Patented Oct. 5, 1915.

This bolt or screw holds a convex EUGENE J. MGCART'Y, OF CLINTON,MASSACHUSETTS, ASSIGNOR TO THOMAS J. MGNAMARA, OF'CLINTON,MASSACHUSETTS.

' TUBE-BLOWER.

To all whom it may concern.

Be it known that I, EUGENE J. McCARTY, a citizen 'of the United States,residing at Clinton, in the county of Worcester and State ofMassachusetts, have invented a new and useful Tube-Blower, of which thefollowing is a specification. I

The principal objects of this invention are to provide a simple, strong,and convenient tube blower which can be connected with a flexible steamhose and can be moved around :easily by the, operator, or convenientlysuspel'tided from above; and which is adapted to be supported at the endby the tube to be cleaned; also-to provide said tube blower with meanswhereby the steam discharged therefrom into the tubes will impinge onthe surface of thetubes in an angular direction equally all. around soas'to loosen the scale and the like therefrom. This latter object issecured by directing the steam against the tubes in a hollow conicalspray. The invention also involves improvements in details ofconstruction as will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Figure 1is a side view of a tube blower constructed in accordance with thisinvention with parts broken awayand shown in central longitudinalsectional view; and Fig. 2 is'an end view of the-same.

The invention is shown ina form in which 'the parts are operated by along handle 10 which can be conveniently manipulated by the operator.This handle fits into the leg 11 of a fitting 12, said fitting beingprovided with another leg 13 opposite'the leg 11, but at an anglethereto, and with a leg 14 at right angles to the leg 13. The legs 13and 14*. hzwe communicating passages and the leg 14 is designed for thereception of a flexible hose for supplying steam, compressed air, or thelike to the interior of the fitting. The leg 11 is solid so as toprovide a rigid hold for the handle.

In the end of'the leg 13 is fitted a long pipe 15, on the other end ofWhich is the hub of a nozzle 16; This nozzle has a chamber 17 forreceiving the steam or compressed air from the pipe 15, and is providedwith a bridge 18 for receivingfa bolt or screw 19. preferablyhemispherical baffle plate 20 the position-of which is adjusted byputting in one or more washers 21 between the baffle plate and theSpecification of Letters Patent.

. Patented Oct. 5, 191.5.

Application filed October 9, 191 1. Serial No. 653,573.

bridge. The nozzle is also provided with an interior conical surface 22at its end, furn'ishing a circumferential continuous conical body orbase ring open at the end. The baflie plate is adjusted to properposition with respect to this surface so that the steam issuing from thenozzle will be forced to assume the form of a hollow cone. In this waythe steam will impinge onthe inner surface of the tubes all around thesagne at an angle so as most efficiently to disengage the scale and thelike from such surfaces.

The nozzle is ribbed equally around on its outer surface. It will beseen that these ribs or projections 23 taper from the outlet end of thenozzle, allowing the nozzle to enter the tube easily, and they extend ina convex shape outward from the body of the nozzle keeping the same inthe center of the tube, tending to form a vacuum and drawing air intothe tube .from back of nozzle, increasing the velocity and power ofsteam and compressed air for cleaning. In actual use the vacuum is sostrong that a handkerchief or glove is held within afew inches of thetube it will be snatched from the hand and drawn into the tube, and ifit does not entwine on the head or nozzle it will be blown out the otherend almost instantly. The ribs also prevent the clogging of this openingand prevent the nozzle coming so far to one side of the tube as to beinefficient for cleaniug the opposite side;

- On the leg 11 of the fitting 12 is shown an eye 2-1 by which the wholedevice can be suspended. The handle 10 preferably is of such length thatit substantially counter balances the rest of the blower when hung fromthis eye so that the weight of the device can be tion and yet theimplement may be manipulated readily by the handle. This is an anportant advantage in the use of the device.

In addition to the advantages which have been mentioned it will be seenthat the device not only is very easy to use and simple to manipulate,but that it consists of very few parts and those of a very simplecharacter. that it contains .no moving parts and no elements likely toget out of order, and that it is designed so as to be of maximum utilityfor this purpose.

Although I have illustrated and described a preferred embodiment of theinvention I am aware, that many modifications can be made therein by anyperson skilled in, the

. detailsof construction herein shown and.

art Without departing from the scope of the invention as expressedin-the claim. There-y fore, I do not Wish to be limited to allthedescribed, but

' What I do claim is A nozzle for cleaning out boiler tubes hav-.

ing a cylindrical hub and a conicalbase ring at the end of the hub andprovided with a concave baffle plate located Within said base ring andspaced therefrom, a perforated bridgeracross the nozzle at the end ofthe conical base ring thereof, a bolt'mounted on,-

the bridge for holding said baflle plate'in position, spacing'devicesbetween the bridge the inner surface ofthe conical base ring, andexternal con'vegrra'dial' projections exwitnesses.

EUGENE J MQCARTY. v Witnesses:

W. H. DIETZMAN, A, E. FAY.

-and baflle-plate for regulating and adjusting .the position of thebaflle plate relative to

